Twice in the past year, separate criminal charges have been filed against people with whom he was involved in gambling transactions, including insider-trading charges... Golf star Phil Mickelson’s appetite for risk helped propel him to three Masters titles, but it also may have been a driver of the gambling that brought him unwelcome headlines and put him in direct contact with people who were allegedly engaging in illegal behavior.

Source: Wall Street Journal May 25, 2016 15:26 UTC